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Sub-permeable membrane wastewater treatment system and process

A wastewater treatment system and osmotic membrane technology, applied in osmosis/dialysis water/sewage treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. Achieve the effect of increasing residence time, simplifying process flow, and eliminating foul odors

Pending Publication Date: 2021-10-15
内蒙古金河环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing reverse osmosis membrane process, the reverse osmosis membrane section has too high requirements on the feed water, and it needs to remove hardness (calcium, magnesium ions) before entering the medium and high pressure reverse osmosis membrane section, and the formulation of the agent used for hardness removal is complicated. , high operating costs, need to build two high-density softening pools, large investment

Method used

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  • Sub-permeable membrane wastewater treatment system and process
  • Sub-permeable membrane wastewater treatment system and process
  • Sub-permeable membrane wastewater treatment system and process

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Embodiment approach 1

[0073] figure 1 It is a schematic structural diagram of a sub-permeable membrane wastewater treatment system according to Embodiment 1 of the present invention; figure 2 Schematic flow chart of the sub-permeable membrane wastewater treatment process according to Embodiment 1.

[0074] Such as figure 1 As shown, the sub-osmotic membrane wastewater treatment system includes a pretreatment unit for sequentially treating raw wastewater, a sub-osmotic membrane concentration unit, a product pool for collecting the produced water of the sub-osmosis membrane concentration unit, and a concentrated water pool for concentrated water . The pretreatment unit includes a collection pool and ultrafiltration equipment; each treatment unit or equipment is connected by a pipeline; an ultrafiltration water pool is also provided between the ultrafiltration equipment and the sub-permeable membrane concentration unit to accommodate the ultrafiltration product water, and the To buffer and fully v...

Embodiment approach 2

[0086] The sub-permeable membrane wastewater treatment system and process flow of embodiment 2 are the same as embodiment 1, the difference is that it mainly has the following aspects:

[0087] In this embodiment, in order to ensure the effect of the wastewater pretreatment by adding sodium hypochlorite, by constructing a large-capacity ultrafiltration water production pool, the capacity is at least 20 cubic meters, and the concentration of residual chlorine ions in the ultrafiltration water production pool is controlled by detection: 0.1-0.5ppm. In order to ensure the effect of sodium hypochlorite wastewater pretreatment, while saving costs.

[0088] In Embodiment 2, after the raw wastewater passes through the wastewater zero-discharge treatment system in Embodiment 2, the water quality indicators of the product pool formed are: hardness ≤ 35 mg / l, TDS ≤ 350 mg / l.

[0089] This implementation method treats raw wastewater, which can realize zero discharge of waste gas, reduce...

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Abstract

The invention relates to a sub-permeable membrane wastewater treatment system and process. The sub-permeable membrane wastewater treatment system comprises a pretreatment unit, a sub-permeable membrane concentration unit, a concentrated water tank and a product water tank which are sequentially connected through pipelines, wherein the pretreatment unit is used for receiving raw material wastewater, performing oxidation treatment and outputting pretreated wastewater; the sub-permeable membrane concentration unit receives the pretreated wastewater, and concentrated water and produced water are formed after membrane separation; and the concentrated water enters the concentrated water tank, and the produced water enters the product water tank. According to the invention, sub-permeable membrane concentration and wastewater oxidation treatment are combined and applied to multi-source, mixed and complex wastewater treatment in an industrial park, so that membrane concentration water production can be directly carried out on the wastewater without hardness removal, and the process flow is simplified. The concentrated water concentrated by the sub-permeable membrane is subjected to hardness removal treatment, so that reduction and hardness removal of the wastewater can be realized, and the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a sub-permeable membrane wastewater treatment system and process. Background technique [0002] Chemical and biopharmaceutical processes will produce a large amount of wastewater, which is usually concentrated in the park's sewage treatment plant for pretreatment and biochemical treatment to meet industrial discharge requirements. Due to the complex composition of these wastewater, in the process of treating the above wastewater, not only will there be unorganized exhaust gas containing unpleasant odors, but also the wastewater treatment is difficult to meet the standards, and the soil and water bodies will be polluted after discharge. In addition, the wastewater treatment process Improper disposal of solid waste such as sludge generated in medium concentration will also have an impact on the surrounding environment of the factory. [0003] Membrane sepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F1/76C02F1/444C02F1/5236C02F1/44
Inventor 田中宏赵冬张祥海谷磊徐宝田洪峰
Owner 内蒙古金河环保科技有限公司
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